Rfid technology has only started in the library industry for more than ten years, but its technology has developed rapidly from the initial simple self-service borrowing and returning books to the realization of various intelligent functions. Especially compared with the traditional bar code and magnetic stripe technology, it has its obvious advantages. 2. 1. 1 Quick self-help lending and returning, improving the humanized service level. The traditional bar code is a contact identification method, which is mainly operated by staff to borrow and return books, which greatly limits the speed of borrowing and returning books. RFID is non-contact inductive identification data, which can complete the borrowing and returning of multiple books at one time, greatly improving the borrowing and returning efficiency of books, avoiding the phenomenon of readers waiting in line and saving readers' time. At the same time, because readers can borrow and return by themselves, it gives readers more autonomy, reduces the contradiction between direct contact between readers and staff and work mistakes, and is more convenient to protect readers' reading privacy.